The Harry Potter movies may have deviated from the books in some pretty major ways, but they did get a lot right in capturing the essence of J.K. Rowling's novels. The increasing maturity of the stories and overall magic of the world is well captured, while the characters are perfectly observed. Across the board the casting choices were spot-on. The young actors all progressed through puberty at a rate that matched their on screen development, while the plethora of British thespians who filled out the adult roles were spot on; it feels like if you weren't in Harry Potter, you just weren't a prominent enough actor. Of course, when dealing franchise this big, with so many characters, some actors are going to miss out on being a part of it. Some managed to get a part the second time around - David Thewlis almost got the role of Professor Quirrell in The Philosopher's Stone, before getting the much meatier Remus Lupin - but most ended up having to view the franchise as a behemoth they weren't quite a part of. Today we bring you fifteen of those actors who narrowly missed out on being a part of the wizarding world. The squibs of acting, if you will.